<h2>DESCRIPTION</h2>

<em>r.in.srtm</em> imports SRTM HGT files into GRASS.

SRTM Version 1 and improved Version 2 data sets can be downloaded from 
NASA at this site:<br>
<a href="http://dds.cr.usgs.gov/srtm/">http://dds.cr.usgs.gov/srtm/</a>

<p>
Gap-filled SRTM Version 3 data can be downloaded from USGS at this site:<br>
<a href="https://e4ftl01.cr.usgs.gov/MEASURES/SRTMGL3.003/2000.02.11/">https://e4ftl01.cr.usgs.gov/MEASURES/SRTMGL3.003/2000.02.11/</a>

<h2>NOTES</h2>

SRTM tiles are of 1 degree by 1 degree size. The SRTM filename contains the
coordinates which refer to the <b>center</b> of the lower left pixel (e.g., N51E010: 
lower left cell center at 10E, 51N). To identify a tile name, a grid can be easily
visualized by <em><a href="d.grid.html">d.grid</a></em>:

<div class="code"><pre>
d.grid size=1
</pre></div>

To import TOPEX/SRTM30 PLUS data, use <em><a href="r.in.bin.html">r.in.bin</a></em>.

<h2>SEE ALSO</h2>

<em>
<a href="r.in.bin.html">r.in.bin</a>,
<a href="https://grass.osgeo.org/grass8/manuals/addons/r.in.srtm.region.html">r.in.srtm.region</a> (Addon),
<a href="https://grass.osgeo.org/grass8/manuals/addons/r.in.nasadem.html">r.in.nasadem</a> (Addon)
</em>

<p>The <a href="http://www2.jpl.nasa.gov/srtm/">Shuttle Radar Topography Mission</a>
homepage at NASA's JPL.
<br>
The <a href="http://pub7.bravenet.com/forum/537683448/">SRTM Web Forum</a>

<h2>REFERENCES</h2>

M. Neteler, 2005. <a href="https://grass.osgeo.org/newsletter/GRASSNews_vol3.pdf">SRTM and VMAP0 data in OGR and GRASS.</a> <i><a href="https://grass.osgeo.org/newsletter/">GRASS Newsletter</a></i>, Vol.3, pp. 2-6, June 2005. ISSN 1614-8746.


<h2>AUTHORS</h2>

Markus Neteler<br>
Improved by W. Kyngesburye and H. Bowman<br>
Update for SRTM V3 by Markus Metz

<!--
<p>
<i>Last changed: $Date$</i>
-->
